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Draft Supplemental Environmental Impact Report Page IV.E-5 Forward Inc. Landfill 2014 Expansion Project L This section includes a summary of impacts and mitigations considered in the 2013 EIR, and has been updated to include impacts and mitigations that are new or have been substantially altered by changes in the proposed project. To facilitate review of the section and comparison bw of analyses between the 2013 EIR and this document, the heading for each impact or mitigation measure reflects whether that impact is the same, revised, replaced, or new. :. Standards of Significance For the purposes of this section, impacts and mitigation measures identified in the 2013 Forward Landfill Expansion EIR were reviewed and incorporated as appropriate. This impact section evaluates the currently permitted activities and proposed project described in the Project Description that could potentially result in impacts to health and the environment based on the i1+ conditions of the project area. The proposed project would have a significant impact with regard to hazardous materials if it would: • Create a potential public health hazard;or • Involve the use, production, or disposal of materials that pose a hazard to people or animal or plant populations in the area affected,beyond baseline conditions. The operation of any project with the potential to expose sensitive receptors to substantial levels of air toxics would be deemed to have a potentially significant impact. More specifically, proposed projects that have the potential to expose the public in excess of the following �• thresholds would be considered to have a significant air quality impact: • Probability of contracting cancer for the Maximally Exposed Individual exceeds 10 in one million. • Ground-level concentrations of non-carcinogens exceed the acceptable health based concentrations (i.e., a Hazard Index of greater than 1.0). .,, In addition to overall risks for public receptors analyzed in the HRA, the landfill expanded operation must conform to safe practices for its operators and programs to minimize and appropriately manage hazardous materials. aw Impacts and Mitigation Measures Impact E.1: Worker exposure to chemical contaminants and particulates during landfill •+ operations would exceed levels protective of human health or safety. (Same as 2013 EIR Impact E.1) ty The project would increase the amount of potentially contaminated waste products because of the proposed expansion of the Class II landfill,but the expansion would be smaller than the expansion project evaluated in the 2013 EIR. The current landfill allows for such materials as I Ow asbestos and automobile shredder waste,and a variety of nonhazardous commercial and industrial wastes including but not limited to sewage sludge;water treatment sludge;grit/grease; holding tank pumpings;storm drain cleanings;dredge and fill materials;fiberglass;soils contaminated with petroleum hydrocarbons,metals,nonpetroleum-based organics, and/or + soluble solids;ash;treated infectious waste;metals-contaminated wastes;organic compound contaminated materials;chemical toilet waste;boiler blowdown water(in dry form only); construction and demolition waste;processed tires;septic tank pumping;cleansed pesticide containers;and nonhazardous leachate.The Forward Landfill accepts cannery wastes in accordance with its WDRs and SWFP.